Incoming Resources
- Harper Trophy, New York, 1998
- Harper Trophy, New York, 2002
- Harper Trophy, New York, 1973
- Harper Trophy, New York, 1991, c1987
- Harper Trophy, New York, 2007
- Harper Trophy, New York, 2005?
- Harper Trophy, New York, NY, 1988
- Harper Trophy, New York, 2009
- Harper Trophy, New York, 2003
- Rayo, Harper Trophy, New York, 2004
- Harper Trophy, New York, 2006